Installed TUD2B100A9362A Trane XL80 2-Stage furnace. Replaced flue up to chimney. Sealed chimney. Checked for proper operation and gas leaks. Installed Trane XR 13 Condenser and ADP Coil. Cycled system. Installed digital programmable thermostat and Aprilaire Merv 11 Air Cleaner 1110 10 year parts 1 year labor warranty.